Selective growth of metal tips onto semiconductor quantum rods and tetrapods

Taleb Mokari, Eli Rothenberg, Inna Popov, Ronny Costi, Uri Banin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

991 Scopus citations

Abstract

We show the anisotropic selective growth of gold tips onto semiconductor (cadmium selenide) nanorods and tetrapods by a simple reaction. The size of the gold tips can be controlled by the concentration of the starting materials. The new nanostructures display modified optical properties caused by the strong coupling between the gold and semiconductor parts. The gold tips show increased conductivity as well as selective chemical affinity for forming self-assembled chains of rods. Such gold-tipped nanostructures provide natural contact points for self-assembly and for electrical devices and can solve the difficult problem of contacting colloidal nanorods and tetrapods to the external world.

Original languageAmerican English
Pages (from-to)1787-1790
Number of pages4
JournalScience
Volume304
Issue number5678
DOIs
StatePublished - 18 Jun 2004

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